Dear Lithica, Since you are a case of congenital cataract
with one eye functioning many doctors maynot intervene to do the surgery.how you have lost the vision in one eye post surgery may be due to multiple causes like nerve damage
due to steriod
induced galucoma, retinal detachment
post surgery,any associated congenital anomaly etc.If you had no perception of light(PL) before surgery then you will not gain any vision in that eye even after surgery.If you had some perception of light then no PL after surgey then its surgery related complication.Now if you have a congenital cataract in left eye with which you are not able to do day to day activity and your retina is normal then you can go for surgery.If you have already undergone surgery and aphakic, using thick aphakic glasses the you have two options.One go for contact lens
and second IOL implantation
to get rid of thick glasses.Depending on the present condition, your visual potential, post operative outcome ,risk benefit ratio your ophthalmologist has deferred your surgery.I would advise you to take a second opinion
from any pediatric ophthalmologist who can help you out....TC ..Dr Ajay Shankar kar, Cornea consultant, Sankar Foundation eye hospital, Vizag.